Steam trap



June 2, 1931. D. A. SMELSER 1,807,882

STEAM TRAP Filed Feb. 27, 1930 Patented June 2, 1931 UNITED- STATES PATENT OFFICE:

DAVID A. SMELSER, F BRISTOL, VIRGINIA STEAM rnnr Application filed February 27, 1930. Serial No. 431,847.

vide a device of this kind constructed and as-- sembled in a manner whereby the controlling valve for theoutlet is carried by the cover structure and is housed Within a bonnet removably mounted upon the cover structure to permit ready access to the valve for reair, replacement or adjustment and wherey the removalof the cover structure permits ready accesswithin the casing or bowl of the trap. v 1

The invention consists in'the details of construction and in the combination and arrangement of the several parts of my improved steam trap whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel'featurcs of my invention will hereinafter be definitely claimed.

In order that my invention maybe the bet- ,ter understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein Y Figure 1 is a view partly in section and partly in elevation illustrating a steam trap constructed in accordance with an embodiment of my invention;

Figure 2 is an enlarged fragmentary sectional view taken through the central portion of the cover structure as herein disclosed and illustrating in detail the controlling valve mechanism and parts immediately associated therewith: Figure 3 is a sectional view taken substantially on the line 33'of Figure l;

As disclosed in the accompanying drawings, C denotes the casing or bowl of the trap having the wall thereof provided with a suit- 5 ably positioned inlet port 1 and with a con- 'ventional blow-down port 2 in the lower portion thereof. v I

Arranged within the casing or bowl C is a bucket float F, the central portion of which having coupled thereto the lower end portion of an upstanding rod or valve stem 3. V The portion of the rod or stem 3 within the casing or bowl O and below the applied cover structure S is substantially surroundedby a dis charge pipe 4. This pipe 4: depends from the central portion of the cover structure. S and has its bore in communication with an opening 5 in the central portion of the cover structure S and through which the rod or stem 3 is directed. This pipe 4 terminates in relatively close proximity to the bottom wall of the bucket'float F;

The cover structure S is held in applied position upon the casing or bowl C in a conventional manner and has formedtherein to '7 one side of its center a substantially radially disposed outlet port 6 which communicates with a continuing outlet port 7 suitably'provided in the wall of the casing or bowl 0.

Detachably secured, as at 8, to the central ortion of the cover structure S is abonnet having a bore 9 with which the opening 5 inthe cover structure S communicates, the upper orouter end of thisbore 9 being continued by a returned port or passagewaylO .m communication with the outlet port 6.

The bore 9 is of a diameter greater than that of theopening 5 and the upper or outer end portion of the wall of the opening 5is enlarged to provide a surrounding rabbet 11 'which is adapted to receive the flanged extremity of a sleeve 12 in which is snugly fitted a valve cage or sleeve 14:. The diameter of thebore of this valve cage or sleeve 14 is substantially the same as that of the opening 5 andthe lower or inner end of this cage or sleeve 14 is also received within the rabbet 11.

The flange 1510f the sleeve 12 is outwardly disposed and is of a thickness in excess of "the depth of the rabbet 11 so that whenthe bonnet 'B is applied the gasket 16 interposed between the bonnet B and the associated portion ofthe cover structure Swill result in, a V steam tight joint.

' The'outer end of the sleeve 12 is defined by 1% an inwardly disposed flange 17 which serves as an abutment for the separable valve seat 18.

A gasket 19 is interposed between the flange 17 and the marginal portion of the valve seat 18 to assure a steam'tight joint at such point and which joint is assured by the fact that the valve seat retainer or sleeve 14 is of such length as to place the gasket 19 under compression when the bonnet B is applied and has contact with the flange 15 hereinbefore referred to.

It is to be noted that the valve seat 18 is of a type to permit the same to be readily reversed so that the life ofsuch valve seat can be materially prolonged. j

The .rod or valve stem 3'also e'xtendsupwardly through the applied valve cage or sleeve 14: and said end port-ion has threaded thereon :a "cylindrical member -20 having raidiating therefrom and disposed lengthwise thereof the flangesQl for-contact with the in ner wall of the cage or sleeve 14: to provide aneffective guide for the valve 22. This valve QQhas-a conical head for proper coaction with the valve seat 18 and a shank 23 which extends within =the outer end of the cylindrical member 20 and is held thereto by a'removable ,pin2 l :or the like. The rod or stem 3also has threaded thereon a lock nut 25 for coaction with the inner. or lower end of the member 20 sothat'the valve 22 willbe eflectively locked in its desired adjustment with respect to the upper orouterendof the rod -or-stemf3. v

When' it is desired to repair the valve mechanism, to replace a part thereof, to a djust the valve 22or to reverse the valve seat 1 8, 'it is only necessaryto detach the bonne't B whereupon the sleeve 12 and the cage or sleeve 14 and valve seat 18 can be readily removed. When so removed the member 20 =ean be adjusted to setthe valve'22 as desired. It is :be li'e'ved"to be obvious that when the 'bonnetB is in applied position the various parts comprised mum valve, mechanism are fixedly maintained in required working or coacting "assembly. It is .also believed to be clearly apparent from the foregoing that when it is 'required'to have access Within the casing or bowl C'for anypurpose it is only .necessaryto remove thecover structure S. i From the v foregoing description it is fhoug htfto be -obvious that a steam'trap constructed in accordance with my inventioniis particularlyiwelladapted for use by reason of the convenience and facility withtwhichlit maybe assembled and operated, and it will alsobe obvious that my invention issuscep- .tible .ofsome change and modification withaout departing from the principles and spirit thereof .and for this .reason I do not wish .to .be understoodas limiting myself to the precise arrangement and formation of :thesev- "era'hparts hereinshownin carrying loutmy "bore of the bonnet, the outer end of the sleeve having .aninturned flange, the inner portion of the sleeve having'a'n outturned flange, the bore of the opening in thetop wall of the casing being enlarged to provide a rabbet to receive said flanged endofthe sleeve, a valve seat retainer snugly fitting within thesleeve and also engaging with the rabbet, a valve member clamped between the inturned flange of the sleeve and the adjacent end, of the valve seat retaining sleeve when the bonnet is in applied position upon the top wall of the casing, and avalve carried by-the stem for coaction withthe Valve seat. 7

1 2. Asteam'tr'ap comprisinga casing having an opening in its top, a float within the casing carrying a stem extending out-through the opening in the =.top,-a bonnet detachably secured to the topwall of the casing and having a bore in communication with the opening in said top wall, said bonnet and top wall having an outlet leading from the bore .ofthe bonnet,.a sleeve snugly engaging within the bore of the bonnet, the outer end of the sleevehaving an inturned flange, the in- .ner portionof the sleeve having anoutturned flange,--the bore of the opening in the top wall .of the casing being enlarged to provide a rabbet to receive said flanged end of the sleeve, a valve seat retainer snugly fitting within the sleeve and also engaging within :therabbet, a valve member clamped between the inturned flange ofthe sleeve and the ad- .jacent end of the valve seat retainingxsleeve when thebonnet is in applied position upon thetop wall of the casing, and a valvecarried by the stem forcoaction with the 'valve seat, said valve seat being reversible and separable from the sleeve and the'valve retaining sleeve.

-3. A steam :trap comprising a casing having an opening in its top, a float within the casing carrying a stemextending out through the. opening in the top, a bonnet detachably secured to the top wall of the casingiand having-a .bore in communication with the opening in said topwall, said bonnet and top wall having an outlet leading from the bore ofthe bonnet, a sleeve snugly engaging within the bore :of the;bonnet, the-outer end of the sleeve having an inturned'flange, the inner portion ofthe :sleeve havin an outturned flange,"the bore ofthe opening in the topwall of the-casingbeing enlarged toprovide a rabbet to receive said flanged end of the sleeve, a valve seat retainer snugly fitting within the sleeve and also engaging within the rabbet, a valve member clamped between the inturned flange of the sleeve and the ad jacent end of the valve seat retaining sleeve when the bonnet is in applied position upon the top wall of the casing, a valve guide adjustably mounted on the outer portion of the stem for coaction with the valve seat retaining sleeve, and a valve carried by said valve guide for coaction with the valve seat.

In testimony whereof I hereunto afl'lx my signature.

DAVID A. SMELSER. 

